> That's a rather arbitrary difference, and not one worth maintaining, I
> think. I should just remove that test.
To remove __sti() (i.e. enforce SA_INTERRUPT) or always to make __sti()?
If the first, let's make it. I am volunteer i.e. I am ready to scan
tree and to insert __sti() at the very beginning of all the interrupt handlers,
which do not use SA_INTERRUPT today. Patch will be ready tomorrow,
if answer is yes.
If the second, it will be mistake. Capability to prevent cpu local
irq handlers reentering is necessary. Not only performance is the reason,
uncontrolled reentering presents potential possibility of too deep
interrupt handlers nesting.
Alexey
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